Home / 28,909.60-43,355.40-11,384.80

Finding the Fourth Proportional to 28,909.60, 43,355.40 and 11,384.80

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Solution

The fourth proportional to 28,909.60, 43,355.40 and 11,384.80 is: 17,073.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,909.60 : 43,355.40 = 11,384.80 : x
  2. Step 2: Convert to fraction form
    28,909.60/43,355.40 = 11,384.80/x
  3. Step 3: Cross multiply
    28,909.60x = 43,355.40 × 11,384.80
  4. Step 4: Simplify right side
    28,909.60x = 493,592,557.92
  5. Step 5: Solve for x
    x = 493,592,557.92/28,909.60
  6. Step 6: Final answer
    x = 17,073.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.